FlexTV addon doesnt work, no log, no action at all

Hello ,

i have read the docs and i am on it for a few days now, so i ask some help because it doesnt work :

i have my Plex server, work great, on docker, on my NAS, omv5. I install webtools, then FlexTV.bundle.

i have then install the Addon FlexTV on hassio on my RPI4.

I have already NGinx Addon, dont know if its the problem or not? (i try put off,no change).

i can reach my Plex server from outside with http://my.public.adress:24761, UPNP is on in my router so port forwarding to 32400 of the local IP of my Plex server.

When i open the Web Ui of FlexTV, it open, i click “Do It” then i link my Google account for Plex sucessfully.

Then i can see my android Tv or my firefox cast, but when i write “play something” nothing append.
if i ask my google home, i have the response that he dont understand what i m asking for : “ok google, talk to FlexTv”.

the strange thing is i have any log in FlexTV web browser…
the Log in the addon stop after "starting NGinx"

nothing more…dont understand what i am doing wrong?

in “setting” in the web ui of PlexTV, i try to put my external Ip, forward in my router : http://my.public.ip:1778
with port 1778 forwarded in my router to 1778 of my local ip of my hassio server where the FlexTV addon is install…

if i try to connect from outside, i have access to the flexTV web ui.

in “setting” if i try to link my Google account with https://my.public.ip:1778, it doesnt work, : " cant access https…try another EXTERNAL IP adress in settings"

if someone can help a bit please? i.m stuck…

thanks